I have MS Serurity Essentials on my computer. No loads scheduled updates for 6 Mos. The program "Hangs Up? . What causes "freezing" and interrup.of automatic Updates? THANKS

I have MS Serurity Essentials downloaded to my computer about a year ago. Now it has not loaded regularly scheduled updates for over 6 Mos. When I manually try to Update... the program "Hangs Up? about 1/3 of the way thrui. I have had the computer on
for updates for over 45 minutes and I need to log off. What could cause unexpected "freezing of the download" and also the unexpected interruption of automatic Updates? THANKS